EP1458454A1 - Als tropfenabscheider und trennboden wirkende einheit - Google Patents
Als tropfenabscheider und trennboden wirkende einheitInfo
- Publication number
- EP1458454A1 EP1458454A1 EP01991670A EP01991670A EP1458454A1 EP 1458454 A1 EP1458454 A1 EP 1458454A1 EP 01991670 A EP01991670 A EP 01991670A EP 01991670 A EP01991670 A EP 01991670A EP 1458454 A1 EP1458454 A1 EP 1458454A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquid
- deflection device
- unit according
- plate
- slats
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
- B01D1/305—Demister (vapour-liquid separation)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/06—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by reversal of direction of flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
Definitions
- the invention relates to a unit acting as a droplet separator and separating bottom with a plurality of lamellae arranged next to one another, which form passage channels between them for a gas flowing from below and loaded with a first liquid, and height-offset catch grooves for collecting a second liquid flowing from top to bottom have, the lower droplet separator part and the upper part of the partition overlap.
- Such a unit is described in DE 199 54 128 AI.
- the known unit combines the effect of a droplet separator and a partition.
- the task of a droplet separator is to separate droplets that are carried by a gas flow. It is characteristic of droplet separators that the droplet loading the gas flow is generally low.
- dividing trays fulfill the task of separating column sections from one another. For example, a gaseous fluid coming from below flows through a separating tray, while a liquid flows from above onto the
- the lower section is designed as a conventional lamella droplet separator.
- the curved wall sections of the lamellas force a deflection on the gas phase flow, which the drops cannot follow or cannot follow sufficiently, so that they hit the walls.
- the liquid raining down from above is separated in collecting troughs which are arranged at different heights. In this way, a gutter overlap preventing rain is achieved without the cross section having to be reduced appreciably below 50% of the free cross section.
- FIG. 1 An example of the unit described in the cited publication is shown in FIG. 1. Only a section of a larger plate pack, which consists of two plates 1, is shown.
- the drop-laden gas 2 enters the droplet separator area against the effect of gravity g with v ⁇ ascending at 3, which is formed from two-dimensional and thus easily extrudable lamellae.
- the gas flow is redirected at 4 for the first time and then again at 5 by approx. 45 °.
- Drops 6 that are not too small are discharged onto the lamellae due to the inertia effect and flow back as films 7 and 8 to the front edge 9 of the lamellae 1, where large drops 10 detach, which can fall back into the upstream section 0 against the gas flow v ⁇ .
- the separating floor area 12 is arranged above the droplet separator area 11.
- the two areas have an overlap area 13.
- the drops 14 which rain down from above are collected in the separating floor area.
- at least two large catch grooves 15 and 16 are arranged offset in height to the left and right of the central lamella 17.
- these catch grooves serve as drainage channels for the removal of the liquid collected in the separating floor section.
- the lamellae can be installed in a known manner, depending on the amount of liquid obtained, with different degrees of inclination in the longitudinal direction.
- the well-known unit consisting of a droplet separator and separating floor works perfectly. In a ge longitudinally ⁇ inclined arrangement of the lamellae at the lower lamella end of the line, the first fluid from the passageways and the second liquid in collecting grooves contact and mix with each other.
- the two liquids are generally different liquids, for example when used in a gas scrubber, the liquid contained in the gas stream (first liquid) and flushing water (second liquid).
- first liquid the liquid contained in the gas stream
- second liquid flushing water
- the raining-down liquid (second liquid) can penetrate into the gap between the upper end of the plate pack and an end plate for structural reasons, reach the lower plate end there and flow along the underside of the diagonally installed slats, so that this liquid also adheres to in the longitudinal direction the lower end of the fins mixed with the other liquid.
- the object of the invention is to further develop the unit or combination of droplet separator and separating tray described above in such a way that mixing of the liquid separated from the gas stream and the raining down liquid at the lower end in the longitudinal direction of the obliquely installed slats is avoided.
- the deflection device provided according to the invention prevents the first liquid, located in the droplet separator part of the passage channels, separated from the gas stream and collected on the lamella walls and flowing obliquely downwards along the walls of the slanted built-in lamellae towards the outlet end of the lamellae, at the outlet end of the lamellae mixed with the second liquid flowing obliquely downwards in the catch grooves.
- the first liquid does not reach the outlet end of the lamellae, but is deflected downwards by the deflection device provided in this area, so that two separate liquid flows result. While the second liquid normally passes the outlet end of the lamellae, the deflection device prevents the first liquid from reaching the outlet end, so that mixing can no longer take place.
- the deflection device preferably has a plate running transversely to the lamella plane. This plate forms a mechanical deflection device for the first liquid in the area of the droplet separator part of the passage channels and, if it extends higher, also for the first liquid in the overlap area between the droplet separator part and the separating bottom part.
- the deflection device has a gutter which runs transversely to the longitudinal direction of the slats.
- the gutter is used to catch the deflected
- the baffle plate expediently forming a wall (the downstream wall) of the gutter.
- the gutter must have a certain dimension in the longitudinal direction of the slats, which is preferably at least 80 mm. If the flow of gas loaded with the first liquid is prevented from below in this area, the deflection effect described above can be achieved by calming the flow.
- the deflection device can thus bring about a mechanical deflection (by means of the deflection plate provided) or a deflection by calming the flow (a flow channel preventing flow from below).
- the combined effect of both effects is particularly preferred, the first liquid present in the droplet separator part preferably being mechanically deflected while rend the first liquid present in the transition area is deflected by flow calming.
- the unit has a further deflection device for the second liquid, which prevents the second liquid from penetrating into the gap between an end plate at the upper end of the plate in the longitudinal direction and the plate pack.
- This further deflection device is preferably designed as a plate directed obliquely downward toward the lower end of the lamella in the longitudinal direction.
- FIG. 1 shows a vertical section through a combination of droplet separator and separating bottom, only a section from a larger plate pack being shown, which consists of two: plates with an interposed passage, according to DE 199 54 128 AI;
- FIG. 2 shows a detail of FIG. 1 on a reduced scale, a deflection device provided according to the invention being shown schematically;
- FIG. 3 shows a longitudinal section through the plate pack of FIG. 2 with the provided deflecting device
- FIG. 4 shows a detail corresponding to FIG. 2 with another embodiment of a deflection device
- FIG. 5 shows a longitudinal section corresponding to Figure 3 with the other deflection device.
- FIG. 1 The known embodiment shown in FIG. 1 of a combination of droplet separator and separating base has already been explained above.
- a droplet separator part 11 is provided in the lower section, while in the upper section a partition part 12 is provided.
- the overlap area of both parts is designated by 13.
- Each lamella 1 has two catch grooves 15, 16, on which are arranged offset in height on the outside and the inside of the lamella.
- the passage channel arranged between the slats 1 is designated by 17. It has a constriction E, which can be narrowed to such an extent by a bulge that the film flowing off in section 18 from drops which are to be separated in separating floor area 12 cannot flow into the drop separator area 11 below.
- the width of the passage channel 17 at the lower end is denoted by t ⁇ A, while the width at the upper end is denoted by t TB .
- the gas velocity in the area of the constriction E is indicated with v E.
- Figure 2 shows the detail of Figure 1 on a reduced scale, the slats 1 are shown in a slightly modified state and have two additional gutters 15.
- the lower droplet separator part TA is again identified with 11, while the upper separating bottom part TB is identified with 12.
- the overlap area is indicated at 13.
- the drop-laden gas 2 contains a first one
- Liquid labeled A The second liquid raining down on the lamellae is designated by B. It can be seen that the liquid B is collected by the gutters 15 and 16. The liquid A is separated in the droplet separator part 11 and flows back as a film to the underside of the lamellae 1.
- a baffle plate designated 20 extends transverse to the longitudinal direction of the slats 1. This baffle plate 20 blocks the passage 17 to the lower end of the overlap area 13 and prevents the liquid A from reaching the outlet end of the plate pack shown at 25 in FIG.
- FIG. 3 shows a longitudinal section through the plate pack, it being clearly evident that the plates 1 are arranged obliquely.
- the liquid B penetrates into the passage channels 17 between the lamellae from above, while the gas stream 2 loaded with the liquid A penetrates into the passage channels 17 between the lamellae 1 from below.
- an end plate 24 At the upper left end of the slats 1 in FIG. 3 there is an end plate 24 to which the slats are fixed, but a gap remains between the end plate 24 and slats 1 (not shown).
- This gap is covered by a deflection device 23 in the form of an obliquely arranged plate, so that the raining liquid B hits the inclined plate and is deflected to the right into the passage channels 16 in FIG. 3. In this way, the liquid B cannot penetrate into the gap.
- the liquid B is collected in the gutters 15, 16 and flows in these gutters to the outlet end 25 of the passage channels or lamellae.
- the plate 2 is flown by gas 2 loaded with liquid A from below.
- the liquid A is separated and flows as that Film covering channel walls also towards the outlet end 25 of the plate pack.
- the baffle plate 20 Arranged upstream of the outlet end 25 is the baffle plate 20, already shown in FIG. 2, which partially blocks the passage channels 17 up to a height at which the overlap region 13 between the droplet separator part 11 and the separating base part 12 begins.
- the liquid A separated in the droplet separator part 11 can therefore not reach the outlet end 25, but rather hits the deflection plate 20 beforehand and is guided by the latter into a gutter 21 running transversely to the plane of the lamellae.
- the existing as a baffle plate 20 and gutter 21 is generally designated 22.
- the deflection direction 22 extends over a certain distance in the longitudinal direction of the lamellae and thus shields this area of the passage channels 17 from the liquid-laden gas flow 2. As a result, a flow-calmed zone is formed in the passage channels 17 in the region of the deflection device, which causes liquid A separated in the transition area 13 to flow downward in the passage channels and to get into the gutter 21. In this way, the liquids A and B are separated, the liquid B passing the outlet end 25 of the lamellae or channels, while the liquid A is collected in the gutter 21.
- the deflection device 22 extends so far in the longitudinal direction of the slats that the flow-reduced zone mentioned above can form.
- FIGS. 4 and 5 show an embodiment in which the deflection plate 20.1 is equipped with finger-shaped extensions 26 which extend into the passage channel 17 for the gas flow and thus into the overlap area 13. These fingers 26 also prevent mixing of the liquid A separated in the overlap region 13 with the liquid B, since they block the passage to the drainage side 25 for the liquid B. With a good fit of the deflection device 22 with the extensions 26, an additional sealing of the deflection device towards the lamellae 1 is not necessary.
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE2001/004896 WO2003055573A1 (de) | 2001-12-22 | 2001-12-22 | Als tropfenabscheider und trennboden wirkende einheit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1458454A1 true EP1458454A1 (de) | 2004-09-22 |
EP1458454B1 EP1458454B1 (de) | 2007-08-01 |
Family
ID=5648330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01991670A Expired - Lifetime EP1458454B1 (de) | 2001-12-22 | 2001-12-22 | Als tropfenabscheider und trennboden wirkende einheit |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1458454B1 (de) |
AT (1) | ATE368498T1 (de) |
AU (1) | AU2002231583A1 (de) |
DE (2) | DE10197197D2 (de) |
WO (1) | WO2003055573A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107281819A (zh) * | 2017-07-03 | 2017-10-24 | 合肥天翔环境工程有限公司 | 一种高效折流板式除雾器 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3834135A (en) * | 1973-10-02 | 1974-09-10 | A Jordan | Grease filter |
SU1666166A1 (ru) * | 1989-08-14 | 1991-07-30 | Всесоюзный научно-исследовательский и конструкторско-технологический институт компрессорного машиностроения Сумского научно-производственного объединения им.М.В.Фрунзе | Массообменный аппарат |
DE4119216C2 (de) * | 1991-06-11 | 1994-09-22 | Wurz Dieter | Tropfenabscheider |
DE19954128A1 (de) * | 1999-11-11 | 2001-05-17 | Esg Emissionstechnik Und Stroe | Integriertes System aus Tropfenabscheider und Trennboden |
-
2001
- 2001-12-22 DE DE10197197T patent/DE10197197D2/de not_active Expired - Fee Related
- 2001-12-22 AT AT01991670T patent/ATE368498T1/de not_active IP Right Cessation
- 2001-12-22 AU AU2002231583A patent/AU2002231583A1/en not_active Abandoned
- 2001-12-22 WO PCT/DE2001/004896 patent/WO2003055573A1/de active IP Right Grant
- 2001-12-22 DE DE50112806T patent/DE50112806D1/de not_active Expired - Fee Related
- 2001-12-22 EP EP01991670A patent/EP1458454B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO03055573A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10197197D2 (de) | 2004-10-28 |
DE50112806D1 (de) | 2007-09-13 |
WO2003055573A1 (de) | 2003-07-10 |
AU2002231583A1 (en) | 2003-07-15 |
ATE368498T1 (de) | 2007-08-15 |
EP1458454B1 (de) | 2007-08-01 |
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